
/*
 * Copyright 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkXfermode.h"
#include "SkComposeShader.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTime.h"
#include "SkTypeface.h"

#include "SkImageRef_GlobalPool.h"
#include "SkOSFile.h"
#include "SkStream.h"

#include "SkBlurDrawLooper.h"
#include "SkColorMatrixFilter.h"

static void drawmarshmallow(SkCanvas* canvas)
    {
    SkBitmap bitmap;
    SkPaint paint;
    SkRect r;
    SkMatrix m;

    SkImageDecoder::DecodeFile("/Users/reed/Downloads/3elfs.jpg", &bitmap);
    if (!bitmap.pixelRef())
        {
        return;
        }

    SkShader* s = SkShader::CreateBitmapShader(bitmap,
                  SkShader::kRepeat_TileMode,
                  SkShader::kRepeat_TileMode);
    paint.setShader(s)->unref();
    m.setTranslate(SkIntToScalar(250), SkIntToScalar(134));
    s->setLocalMatrix(m);

    r.set(SkIntToScalar(250),
          SkIntToScalar(134),
          SkIntToScalar(250 + 449),
          SkIntToScalar(134 + 701));
    paint.setFlags(2);

    canvas->drawRect(r, paint);
    }

static void DrawRoundRect(SkCanvas& canvas)
    {
    bool ret = false;
    SkPaint  paint;
    SkBitmap bitmap;
    SkMatrix matrix;
    matrix.reset();

    bitmap.setConfig(SkBitmap::kARGB_8888_Config, 1370, 812);
    bitmap.allocPixels();
#if 0
    SkCanvas canvas;
    canvas.setBitmapDevice(bitmap);
#endif

    // set up clipper
    SkRect skclip;
    skclip.set(SkIntToScalar(284), SkIntToScalar(40), SkIntToScalar(1370), SkIntToScalar(708));

//   ret = canvas.clipRect(skclip);
//   SkASSERT(ret);

    matrix.set(SkMatrix::kMTransX, SkFloatToScalar(-1153.28f));
    matrix.set(SkMatrix::kMTransY, SkFloatToScalar(1180.50f));

    matrix.set(SkMatrix::kMScaleX, SkFloatToScalar(0.177171f));
    matrix.set(SkMatrix::kMScaleY, SkFloatToScalar(0.177043f));

    matrix.set(SkMatrix::kMSkewX, SkFloatToScalar(0.126968f));
    matrix.set(SkMatrix::kMSkewY, SkFloatToScalar(-0.126876f));

    matrix.set(SkMatrix::kMPersp0, SkFloatToScalar(0.0f));
    matrix.set(SkMatrix::kMPersp1, SkFloatToScalar(0.0f));

    ret = canvas.concat(matrix);

    paint.setAntiAlias(true);
    paint.setColor(0xb2202020);
    paint.setStyle(SkPaint::kStroke_Style);
    paint.setStrokeWidth(SkFloatToScalar(68.13f));

    SkRect r;
    r.set(SkFloatToScalar(-313.714417f), SkFloatToScalar(-4.826389f), SkFloatToScalar(18014.447266f), SkFloatToScalar(1858.154541f));
    canvas.drawRoundRect(r, SkFloatToScalar(91.756363f), SkFloatToScalar(91.756363f), paint);
    }

static bool SetImageRef(SkBitmap* bitmap, SkStream* stream,
                        SkBitmap::Config pref, const char name[] = NULL)
    {
#if 0
    // test buffer streams
    SkStream* str = new SkBufferStream(stream, 717);
    stream->unref();
    stream = str;
#endif

    SkImageRef* ref = new SkImageRef_GlobalPool(stream, pref, 1);
    ref->setURI(name);
    if (!ref->getInfo(bitmap))
        {
        delete ref;
        return false;
        }
    bitmap->setPixelRef(ref)->unref();
    return true;
    }

//#define SPECIFIC_IMAGE  "/skimages/72.jpg"
#define SPECIFIC_IMAGE  "/Users/reed/Downloads/3elfs.jpg"

#define IMAGE_DIR       "/skimages/"
#define IMAGE_SUFFIX    ".gif"

class ImageDirView : public SkView
    {
    public:
        SkBitmap*   fBitmaps;
        SkString*   fStrings;
        int         fBitmapCount;
        int         fCurrIndex;
        SkScalar    fSaturation;
        SkScalar    fAngle;

        ImageDirView()
            {
            SkImageRef_GlobalPool::SetRAMBudget(320 * 1024);

#ifdef SPECIFIC_IMAGE
            fBitmaps = new SkBitmap[3];
            fStrings = new SkString[3];
            fBitmapCount = 3;
            const SkBitmap::Config configs[] =
                {
                SkBitmap::kARGB_8888_Config,
                SkBitmap::kRGB_565_Config,
                SkBitmap::kARGB_4444_Config
                };
            for (int i = 0; i < fBitmapCount; i++)
                {
#if 1
                SkStream* stream = new SkFILEStream(SPECIFIC_IMAGE);
                SetImageRef(&fBitmaps[i], stream, configs[i], SPECIFIC_IMAGE);
                stream->unref();
#else
                SkImageDecoder::DecodeFile(SPECIFIC_IMAGE, &fBitmaps[i]);
#endif
                }
#else
            int i, N = 0;
            SkOSFile::Iter  iter(IMAGE_DIR, IMAGE_SUFFIX);
            SkString    name;
            while (iter.next(&name))
                {
                N += 1;
                }
            fBitmaps = new SkBitmap[N];
            fStrings = new SkString[N];
            iter.reset(IMAGE_DIR, IMAGE_SUFFIX);
            for (i = 0; i < N; i++)
                {
                iter.next(&name);
                SkString path(IMAGE_DIR);
                path.append(name);
                SkStream* stream = new SkFILEStream(path.c_str());

                SetImageRef(&fBitmaps[i], stream, SkBitmap::kNo_Config,
                            name.c_str());
                stream->unref();
                fStrings[i] = name;
                }
            fBitmapCount = N;
#endif
            fCurrIndex = 0;
            fDX = fDY = 0;

            fSaturation = SK_Scalar1;
            fAngle = 0;

            fScale = SK_Scalar1;
            }

        virtual ~ImageDirView()
            {
            delete[] fBitmaps;
            delete[] fStrings;

            SkImageRef_GlobalPool::DumpPool();
            }

    protected:
        // overrides from SkEventSink
        virtual bool onQuery(SkEvent* evt)
            {
            if (SampleCode::TitleQ(*evt))
                {
                SkString str("ImageDir: ");
#ifdef SPECIFIC_IMAGE
                str.append(SPECIFIC_IMAGE);
#else
                str.append(IMAGE_DIR);
#endif
                SampleCode::TitleR(evt, str.c_str());
                return true;
                }
            return this->INHERITED::onQuery(evt);
            }

        void drawBG(SkCanvas* canvas)
            {
//        canvas->drawColor(0xFFDDDDDD);
            canvas->drawColor(SK_ColorGRAY);
            canvas->drawColor(SK_ColorWHITE);
            }

        SkScalar fScale;
        virtual void onDraw(SkCanvas* canvas)
            {
            this->drawBG(canvas);

            if (true)
                {
                canvas->scale(SkIntToScalar(2), SkIntToScalar(2));
                drawmarshmallow(canvas);
                return;
                }

            if (false)
                {
                SkPaint p;
                p.setStyle(SkPaint::kStroke_Style);
                p.setStrokeWidth(SkIntToScalar(4));
                canvas->drawCircle(SkIntToScalar(100), SkIntToScalar(100), SkIntToScalar(50), p);
                p.setAntiAlias(true);
                canvas->drawCircle(SkIntToScalar(300), SkIntToScalar(100), SkIntToScalar(50), p);
                }
            if (false)
                {
                SkScalar cx = this->width()/2;
                SkScalar cy = this->height()/2;
                canvas->translate(cx, cy);
                canvas->scale(fScale, fScale);
                canvas->translate(-cx, -cy);
                DrawRoundRect(*canvas);
                return;
                }

            canvas->translate(SkIntToScalar(10), SkIntToScalar(10));

            SkScalar x = SkIntToScalar(32), y = SkIntToScalar(32);
            SkPaint paint;

#if 0
            for (int i = 0; i < fBitmapCount; i++)
                {
                SkPaint p;

#if 1
                const SkScalar cm[] =
                    {
                    SkIntToScalar(2), 0, 0, 0, SkIntToScalar(-255),
                    0, SkIntToScalar(2), 0, 0, SkIntToScalar(-255),
                    0, 0, SkIntToScalar(2), 0, SkIntToScalar(-255),
                    0, 0, 0, SkIntToScalar(1), 0
                    };
                SkColorFilter* cf = new SkColorMatrixFilter(cm);
                p.setColorFilter(cf)->unref();
#endif

                canvas->drawBitmap(fBitmaps[i], x, y, &p);
                x += SkIntToScalar(fBitmaps[i].width() + 10);
                }
            return;
#endif

            canvas->drawBitmap(fBitmaps[fCurrIndex], x, y, &paint);
#ifndef SPECIFIC_IMAGE
            if (true)
                {
                fCurrIndex += 1;
                if (fCurrIndex >= fBitmapCount)
                    {
                    fCurrIndex = 0;
                    }
                this->inval(NULL);
                }
#endif
            }

        virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y)
            {
            if (true)
                {
                fCurrIndex += 1;
                if (fCurrIndex >= fBitmapCount)
                    fCurrIndex = 0;
                this->inval(NULL);
                }
            return new Click(this);
            }

        virtual bool onClick(Click* click)
            {
            SkScalar center = this->width()/2;
            fSaturation = SkScalarDiv(click->fCurr.fX - center, center/2);
            center = this->height()/2;
            fAngle = SkScalarDiv(click->fCurr.fY - center, center) * 180;

            fDX += click->fCurr.fX - click->fPrev.fX;
            fDY += click->fCurr.fY - click->fPrev.fY;

            fScale = SkScalarDiv(click->fCurr.fX, this->width());

            this->inval(NULL);
            return true;
            return this->INHERITED::onClick(click);
            }

    private:
        SkScalar fDX, fDY;
        typedef SkView INHERITED;
    };

//////////////////////////////////////////////////////////////////////////////

static SkView* MyFactory()
    {
    return new ImageDirView;
    }
static SkViewRegister reg(MyFactory);

